title: Subtype analysis of Cryptosporidium parvum and Cryptosporidium hominis isolates from humans and cattle in Iran.
abstract: Cryptosporidium is an intestinal parasite associated with severe acute diarrhea in humans and animals. To investigate subtypes of Cryptosporidium spp. isolated from humans and cattle in Iran, 47 Cryptosporidium parvum (22 from children and 25 from cattle) and three Cryptosporidium hominis from children were characterized by sequence analysis of the 60 kDa glycoprotein (gp60) gene. Nine subtypes (two of C. hominis and seven of C. parvum) in four subtype families were identified. Cattle were mainly infected with C. parvum IIa subtypes and humans mostly with the C. parvum IIa and IId subtypes. Consequently, cattle could be a source of human infection with C. parvum IIa in Iran. However, the occurrence of subtype IId families in Iranian children, suggests that other infection sources might also be involved in C. parvum transmission. To our knowledge, this is the first published record and description of Cryptosporidium subtypes in Iran.
authors.affiliation: Research Center for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Ehsan
authors.initials: E
authors.lastname: Nazemalhosseini-Mojarad
authors.forename: Ali
authors.initials: A
authors.lastname: Haghighi
authors.forename: Niloofar
authors.initials: N
authors.lastname: Taghipour
authors.forename: Akbar
authors.initials: A
authors.lastname: Keshavarz
authors.forename: Seyed Reza
authors.initials: SR
authors.lastname: Mohebi
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Zali
authors.forename: Lihua
authors.initials: L
authors.lastname: Xiao
mesh_terms: D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology / Q000469:parasitology*; D003457:Cryptosporidiosis / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*; D003458:Cryptosporidium / Q000145:classification* / Q000302:isolation & purification; D006801:Humans; D007492:Iran / Q000453:epidemiology